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A special edition of Click focuses on the South by Southwest Interactive Festival in Austin, Texas, USA. Gareth Mitchell and LJ Rich report on the limits of tweeting from North Korea; leaping into motion with a fine gesture controller sensitive to your fingers; how to building a travel App within 48 hours; why crisis managers might welcome your photos of evolving disasters but not necessarily want you to use tweets as a way to call out the emergency services; and finally Click reports of the latest trends to emerge from one of the world鈥檚 premiere digital festivals.